Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

A 20th-century picture show in 3-D.

Museum dedicated to "the man who moved the Earth."

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

A whimsical menagerie of devils, krampuses, satyrs, and other horned creatures.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

Two monstrous faces loom over a village in Czechia.

An eerie former warehouse turned cistern turned movie set.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

Rocky Atlantic beach home to a stunning stone arch.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

Founded as a refugee camp, now a popular tourist spot.

Morocco's Argania trees are infested with nut-hungry goats.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Church holding the preserved body of a levitating saint.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.